Fourdrinier machine



A. 1. DAVIES.

FOURDRINIER MACHINE.

APPLICATION FILED MAR. 12, 1921.

aigagggm Patented Aug. 8, 1922.

3 5 mm o //v l/E/V T0 F? ALBEHTJDAV/ES ATT'K :92 as) t me o ALBERT JOHN DAVIES, OE SAULT STE. LEAH/IE, ONTARIO, CANADA.

FOURDRINIER MACHINE.

Application filed March 12, 1921.

T 0 all whom it may concern.

Be it known that I, ALBERT J. DAVIES, a subject of Great Britain, residing at Sault Ste. Marie, in the Brovince of Ontario and Dominion of Canada, have invented a new and useful Improvement in Fourdrinier Machines, of which the following is a speciiication.

This invention relates to the paper-forming mechanism of a Fou'gdrinier machine and has particular reference to the scraper that is applied to the declrel-strap. The use of scrapers in this connection is not new with me; but 1 have found none in use that may be called resiliently adjustable nor do I know of any that may be adjusted or changed without danger of injury to the sheet or to the wire.

in this invention, 1 have so mounted the scraper that it may yieldingly engage the deckel-strap and thus follow any irregularities in the upper surface thereof. Furthermore, I provide means for adjusting the pressure of the scraper, and mechanism for removing the scraper from its contact with said strap, without the necessity of stopping the machine and without disturbing the adjustments of the scraper.

1n the drawings which accompany and form part of this specification,

Fig. 1 is a diagram, in side elevation, of

the sheet-forming portion of a llourdrinier machine, with my device attached.

Fig. 2 is a plan diagram showing the relation of the scrapers to the wire.

Fig. 3 is a detail view, in side elevation, of one form of my invention, as attached.

Fig. 1 is a plan view of'Fig. 3.

Fig. 5 is a partial view of my preferred form, with parts broken away, showing the hinge open.

Fig. 6 is a side elevation, similar to Fig. 3, showing my preferred form.

The simpler form shown in Figs. 3 and 4: will first be described. The deckel-strap A and frame B may be of the usual con struction. lily scraper 1, preferably of leather, is mounted in a hinged clasp comprising a fixed leaf 2 and a leaf 3 hinged thereto at 4:. Scraper 1 may be secured to either of these leaves or it may be hung on pins 5 (Fig. 5) and may be thus easily renewed without dismantling the device.

Leaves 2 and 3 may be locked together, when in use, by a thumb-nut 6 (Fi 3), thus clamping scraper l firmly in place. Leaf Specification of Letters Patent.

LPatented Ana. 8., 1922.

Serial No. 451,693.

2 is attached, by screws 7, to a bar 8, the latter being pivotally attached at 9 to a rock-lever 10 which, in turn, is pivotally attached at 11 to frame B. At pivot 9, a shoulder 12 is formed to limit the swing of bar 8 in one direction, and a lock-pin 13 tends to hold bar 8 against shoulder 12. Pin 13 is loosely mounted in bar 8 and has a handle 14 by which it may be lifted and turned when it is desired to swing bar 8 on pivot 9.

Underlying a portion of bar 8 and fast with rock-lever 10, is a shelf 15 which not only gives additional support to bar 8, but which is provided with a hole 16 to slidably receive pin 13 and thus form the look. When it is desired to swing bar 8 on pivot 9, handle 14: is raised, against the action of a spring 17, until lugs 18, fast on pin 13, clear recesses 19 in bar 8, whereupon handle 14 may be operated to give a slight rotary movement to pin 13, thus causing lugs 18 to lock over the upper surface of bar 8 and hold pin 13 in raised position. This raising of handle 14 and pin 13 is sufficient to cause the latter to entirely leave hole 16, so that bar 8 may be freely swung away from shoulder 12. Spring 17 is not an essential element in this construction.

On the rear of rocl:lever 10 is an upwardly projecting arm 20, the end of which is adapted to loosely surround a threaded post 21 which is fast upon a bracket 22, the latter being secured to frame B by bolts 23. A spiral spring 24 serves to ikc'ep scraper 1 in yielding contact with deckelstrap A, and a nut 25, threaded on the free end of post 21, serves as an adjustable stop to limit the downward movement of scraper 1 and bar 8.

In Fig. 6, the general construction is the same as in Figs. 3 and 1, except that post 21 is sufficiently elongated to receive a spring 24 which counteracts spring 24. By this means, roclnlever 10 is cushioned betweensprings 24c and 2 k and differences in the weights 'of the two arms of rock-lever 10 are SocOmpensated that the pressure of scraper 1 upon declrel-strap A may be regulated to suit the requirements of difierent machines or differing conditions. A1so,this method provides for automatic compensation for the wear of scraper 1. Nut 25 serves as an adjustable abutment for one end of spring 2 1 while a collar 30 and set screws 31 serve a like purpose for spring 2%. In this way, the pressure of scraper 1 is adjusted to any desired degree, and automatic compensation for the wear of scraper 1 is provided within reasonable limits; while, at the same time, scraper 1 may be removed for examination and replaced with out disturbing these adjustments or the general mountings. I 7

Attention is called to the fact that scraper 1 may be disengaged from declrel-strap A by loosening thumb-nut 6 and, without employing lock-pin 13, scraper 1 may then be swung up about hinge 4; but, as this method may permit the dropping of water or other parts upon the formed sheet, I consider it inadvisablewhile the machine is in operation, and prefer to disengage scraper l by employing hinge 9.

It is to be understood that I do not limit myself to the precise construction shown as, for instance, a portion of bar 8 might be made elastic and thus, in itself, provide a means for disengaging scraper 1 from deckel-strap A. Iprefer to provide special mechanism for such disengagement, as such is required for the purpose of this invention. I

Furthermore, the boss 26, shown as in tegral or fast with frame B, might be a separate filling piece and the pivot 11 be threaded only into the web 27 of frame B; or other changes may be made in the construction, if within the scope of the ap pended claims,

hat I claim is: l

1. In a Fourdrinier machine, a deckelstrap; and a frame; in combination with a scraper; means, mounted on said frame, for holding said scraper in engagement with said deckel-strap; and mechanism for disengaging said scraperfrom said deckel-strap Without deranging said mounting means.

2. In a Fourdrinier machine, a deekelstrap; and a frame; in combination with a scraper; means, mounted on said frame, for holding said scraper in yielding engagement with said deckel-strap; and mechanism for disengaging said scraper from said deckelstrap without deranging said mounting means. Y 3. In a Fourdrinier machine, a frame; a scraping member; a hinged mounting for said member; and means for securing said 'mountmg against said frame.

4L. In a Fourdrinier machine, a frame; a scraping member; a hinged mounting for said member; and means for securing said mounting in elastic relation to said frame.

5. In a Fourdrinier machine, a decke'lstrap; and a frame; in combination with a scraping member pivotally mounted in connection with saidv frame and positioned to engage said deckel-strap.

6. Inna Four-drinier machine, a deckelstrap; iandra frame; in combination with a scraping member adapted to engage said deckel-strap adjustable means for mounting said scraper in connection with said frame; and mechanism for withdrawing said scraping member from its engagement with said deckel-strap, without deranging said adjustable means.

9. In a Fourdrinier machine, a declrel strap; and a frame; in combination with a vscraper adapted to engage said deckelj strap;

and means for mounting said scraper in connection with said frame, sald means including a horizontal pivoting member and a vertical pivoting member.

10. In a Fourdrinier machine, a frame; a lever pivotally mounted on said frame; and a scraping member pivotally mounted on said lever and adapted to engage said deckel strap. 7

11. In a Fourdrinier machine, a frame; a

lever pivotally mounted on said frame; and a.

scraping member pivotally mounted in connection with said lever and adapted to yieldi-ngly engage said deckel-strap.

12. In a Ifourdrinier machine, a frame; a lever pivotally mounted onsaid frame; a scraping member pivotally mounted in connection with said lever; and adjustable means for controlling said member.

13. In a Fougrdrinier machine, a frame; a scraper; a hinged mounting for said scraper; and means for pivotally connecting said mounting with said frame.

14:. In a Fourdrinier machine, a frame; a scraping member; and means for so connecting said member with said frame that it may be swung both vertically and horizontally.

15. In a Fourdrinier machine, a frame;,a

scraping member; means for so connecting said member with said frame that it may be I swung horizontally; and means for locking said member against such ho-rizontalmovement.

16. In a Fourdrinier machine, a scraping member; a pivotal mounting for said mem- 'ber; and adjust-able cushioning means for controlling said member.

17 In a Fourdrinier machine, a scraping member; a rock-lever; a pivotal mounting for said rock-lever; cushioning means for controlling said rock-lever; and movable means for connecting said member with said rock-lever.

18.1112, Fourdriniermachine', a scraping means for mounting said scraper i; upon said frame and in engagement with said deckel-strap; mechanism for disensaic scraper from said deckel-strap l cieranging said mounting means; and compo; sating means for automatically taking up the wear on said scraper.

in a Fourdrinier machine, declrelstrap; and a frame; in combination with a scraper; means for adjustably mounting said scrap r in connection with said frame and in contact with said declrel-strap and compensating means for automatically tak ing up the wear on said scraper.

In a Fourdrinier machine, a frame; a scraper; a hinged mounting for said scraper; attaching said mounting to said a lock for said hinge.

L Eourdrinier machine, a declrelstep and a frame; in combination with a mounted in connection with said 'i'rnne; and adjustable means for holding i scraper in yielding engagement with saio. deckel-strap.

25. In Fourdrinier machine, a declrelstrap; and a frame; in combination with scraping means mounted in connection with said rrame and comprising a scraper adapted to elastically engage said deckel-strap; a pivotal mounting for said scraper; and a lock for said pivotal mounting.

26. In a Fourdrinier machine, a declrelstrap; and a frame; in combination with scraping means mounted in connection with said frame and comprising a scraper adapted to engage said deckel-strap; adjustable means for controlling said engagement; a pivotal mounting for said scraper; and a lock for said pivotal mounting.

27. In a l ourdrinier machine, a frame; alever pivotally mounted on said frame; elastic means for controlling said lever; an arm pivotally mounted on said lever; a scraper mounted on said arm; and a lock for said arm.

28. In a Fourdrinier machine, a frame; a lever pivotally mounted on said frame; adjustable means for controlling said lever; an arm pivotally mounted on said lever; a scraper mounted on said arm; and a lock for said arm.

29. In a Fourdrinier machine, a frame; a lever pivotally mounted in connection with said frame; elastic means for controlling said lever; a scraper; a hinged mounting for said scraper; and means for connecting said hinged mounting and said lever.

30. In a Fourdrinier machine, a frame; a lever pivotally mounted in connection with said frame; adjustable means for controlling said lever; a scraper; a hinged mounting for said scraper; and means for connecting said hinged mounting and said lever.

In testimony whereof, I hereby afiix my signature, in the presence of two witnesses.

ALBERT J OHN DAVIES.

W'itnesses L. H. SHIPMANN, B. J. VVATERS. 

